More time posting than coding
It will take a while for the "one person" concept to filter through to banks, clients, etc. Whilst you may "legally" only need one person, what happens if the bank's mandate or your client contract requires two signatures - do you really want a legal argument about who's right - would it not be simpler to keep the co-sec for a while until the change filters through to everyone else and in the meantime you can both continue to jointly sign official paperwork without the hassle of playgrounds arguments as to who is right which are inevitable for such a major change after such a long time of 2 people being needed. Life's too short. Keep the co sec for a few months - what's the harm?